Can you please add the unit(s)
-type -fire
Name- Utility (1 staff)- approx $15,000-20,000
(basically a unit that responds and boards up windows after a fire and does various support jobs for calls that need extra support such as water rescue, accident, big call, etc.)

It would be Nice if the callout turns purple when it could be arson instead what does it needs to solve?

I recommend battalion chief/deputy Chief, police supervisor, Fire Marshall, arson Investigation, truck/engine/squad (rapport that they have to make and they know what they Saw)

it should looks like this: its red when you get it when they arrived the timer starts the timer runs out it popups purple and an amount of police, Chiefs, Marshalls and investigators needs to bring in
no Idea of its possible to do so i guess that's on the devilopers of the game it would be fun in any sort of way